‘Rule of thumb’…. part #2

Builders.

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As a follow on to: Rule of thumb in evaluating gear mesh , I present part #2

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Question: Why does it say “Wear safety goggles” when it really should say “Do not put thumb on top of chisel when striking with hammer’?

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If you needed engine building advice, would you ask a man who just had a manicure, or the man who has a bloody thumb?

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wewjr.

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